Words are handy.
In some ancient cultures the act of naming something was tantamount to creating it. It didn't exist beforehand, and you said "spoon" and suddenly there was this metal thing you use to dig food.
Does anything exist before you name it? How could it? It couldn't exist in your cranium, and therefore couldn't be. But once you apply a name to it, everything fits right in place. Before there was all this junk floating around in your brain. Maybe little images of tires and panels and glass and antennae and seats and engines. But no words. And then you get the word "car" and BAM, all that shit flies together and into a neat little cubby in your brain marked "car." And then there's all these little subdivisions for the engine and the parts and those subdivisions are connected to other major groups of words.
Without words there would be nothing.
How upsetting is it for a person when they can't articulate? Y'ever forget a word? Its so maddening.
So our brains are all rooted in words. Maybe without words we'd have some other system of keeping shit together, but we'll never know as such an idea is so hypothetical and out there and foreign that we can't apply words to it. In fact, applying words to it would destroy it.
Words are cool.